Disc for disc brakes

Claim 1

A BRAKE DISC OF THE TYPE IN WHICH A ROTATABLE DISC CARRYING PADS OF FRICTION MATERIAL ARE CARRIED BY A ROTATABLE AXIAL SHAFT AND ADAPTED TO BE BROUGHT INTO ENGAGEMENT WITH RELATIVELY STATIONARY SURFACES ON OPPOSITE SIDES OF THE DISC TO APPLY TO THE BRAKES COMPRISING A SUBSTATNAITLLY FLAT DISC, A PLURALITY OF ANGULARLY SPACED NOTCHES OPEN AT THEIR OUTER END ON THE PERIPHERY OF THE DISC, SAID NOTCHES HAVE CIRCUMFERNETIALLY SPACED SUBSTANTIALLY RADIALLY EXTENDING SIDES, A BLOCK OF CONSUMABLE FRICTION MATERIAL OF GRATHER AXIAL THICKNESS THAN SAID DISC MOUNTED IN EACH OF SAID NOTCHES, EACH OF SAID BLOCKS HAVING A CIRCUMFERENTIAL OUTER EDGE PART AND SIDE EDGES CORRESPONDING TO THE SIDES OF SAID NOTCHES, EACH OF SAID SIDE EDGES BEING PROVIDED RECEIVING A SIDE OF THE NOTCH IN WHICH SAID EACH GROOVE RECEIVING A SIDE OF THE NOTCH IN WHICH SAID BLOCK IS MOUNTED, AND A PERIPHERALLY DISPOSED RELEASABLE CLIP COOPERATING WITH SAID CIRCUMFERENTIAL OUTER EDGE PART OF EACH OF SAID BLOCKS AND EXTENDING BETWEEN AND ENGAGING THE SIDES OF SAID NOTCHES ADJACENT THEIR RADIAL OUTER ENDS FOR PREVENTING MOVEMENT OF SAID BLOCKS AWAY FROM SAID NOTCHES, SAID BLOCKS BEING REMOVABLE FROM AND INSERTABLE INTO THE NOTCHES UPON REMOVAL OF SAID CLIP.